Some apartments of the early 1900's were known as dumbbell tenements because they had

Its A. Few windows and no ventilation

Explanation:

B, C, and D are all things good houses and homes have, for the wealthy or even middle class. But tenements were for the working poor and people who did not have a lot, these homes were cramped, small, dirty, dangerous, and many had no windows or air flow. Thus it is A.

it took two men to wrestle rome back from chaos and turn a republic into an empire. in the first century bc, rome was a republic. power lay in the hands of the senate, elected by roman citizens. but the senators were fighting for power between themselves.